Hello. I have a Sony STR-K740P hooked to surround sound. I recently noticed that the sound is distorted in two of the rear speakers. It doesn't happen all the time, only on certain channels - those airing surround I suppose. I keep the speaker setting in "NORM.SURR." mode, as this seems to have generated the best output in the past. Do receivers commonly go out? Can it be cleaned for better performance? Any suggestions or advice would be appreciated.
Receivers like this will incorrectly decode rear channel audio and pass it on to the rear channels as distorted audio. Make sure the source being used really has rear channel information encoded into it. It could have other issues but check this first.
Posted on Jul 15, 2009
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Mine is Yamaha amplifier home theatre system. only 2 of the fron speakers and the centre one distorts. you hear a humming sound.it only happens when i am watching a movie
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